The Beat Farmers with Dave Alvin — the legendary San Diego “cowpunk” band since the early 1980s — will headline the free music festival. They’ll perform Sunday at 5:45 p.m. on the Roots Rock Stage, Adams Avenue at 34th Street.

Saturday night’s top acts include — both at 8:45 p.m. — the beach-influenced Mrs. Magician on the Casbah Rock Stage at 33rd Street; and the Sugaray Rayford Blues Band on the Blues Stage at Hawley Boulevard.

Sunday’s major attractions, besides the Beat Farmers, are Grammy nominee Lisa Haley and the Zydecats, 5:45 p.m. on the Blues Stage; and indie rockers Sebadoh, 4:15 p.m. on the Casbah Rock stage.

The festival runs 10 a.m. to 10 p.m. Saturday and 10 a.m. to 7 p.m. Sunday, along Adams Avenue roughly between 32nd and 35th streets. It will also include three beer gardens, craft brew tasting today from noon to 4 p.m., carnival rides and more than 300 vendor booths.